How is Sai Baba's divinity described in Chapter 4, particularly in relation to concepts like 'Neti-Neti'?

Chapter 4 elevates Sai Baba to the status of the Supreme Divinity. He is identified as the Inner Self, the Supreme God, the Guru, and the joy-giving Shankar. The text portrays Him as eternal, non-dual, and beyond the limitations of place, time, or object. The chapter explains that His true nature is so profound that the four levels of speech—Para, Pashyanti, Madhyama, and Vaikhari—become exhausted trying to describe Him. In a powerful conclusion, it notes that even the Vedas, in their attempt to define Him, ultimately resorted to the expression 'Neti-Neti,' meaning 'Not this, Not this,' acknowledging that He is beyond all description and comprehension.